WO2005118767A1 - Concentre en pate pouvant former des solutions detergentes et de lavage, alcalines et stables (pas de separation) - Google Patents

Concentre en pate pouvant former des solutions detergentes et de lavage, alcalines et stables (pas de separation) Download PDF

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Publication number
WO2005118767A1
WO2005118767A1 PCT/EP2004/050963 EP2004050963W WO2005118767A1 WO 2005118767 A1 WO2005118767 A1 WO 2005118767A1 EP 2004050963 W EP2004050963 W EP 2004050963W WO 2005118767 A1 WO2005118767 A1 WO 2005118767A1
Authority
WO
WIPO (PCT)
Prior art keywords
concentrate
general formula
mpas
whole
concentrate according
Prior art date
Application number
PCT/EP2004/050963
Other languages
English (en)
Inventor
Khalil Shamayeli
Original Assignee
Ecolab Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ecolab Inc. filed Critical Ecolab Inc.
Priority to PCT/EP2004/050963 priority Critical patent/WO2005118767A1/fr
Priority to AT04741679T priority patent/ATE423188T1/de
Priority to EP04741679A priority patent/EP1751265B1/fr
Priority to DE602004019580T priority patent/DE602004019580D1/de
Priority to DK04741679T priority patent/DK1751265T3/da
Publication of WO2005118767A1 publication Critical patent/WO2005118767A1/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/02—Inorganic compounds ; Elemental compounds
    • C11D3/04—Water-soluble compounds
    • C11D3/044—Hydroxides or bases
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66—Non-ionic compounds
    • C11D1/825—Mixtures of compounds all of which are non-ionic
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/0008—Detergent materials or soaps characterised by their shape or physical properties aqueous liquid non soap compositions
    • C11D17/003—Colloidal solutions, e.g. gels; Thixotropic solutions or pastes
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/02—Inorganic compounds ; Elemental compounds
    • C11D3/04—Water-soluble compounds
    • C11D3/06—Phosphates, including polyphosphates
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/02—Inorganic compounds ; Elemental compounds
    • C11D3/04—Water-soluble compounds
    • C11D3/08—Silicates
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66—Non-ionic compounds
    • C11D1/722—Ethers of polyoxyalkylene glycols having mixed oxyalkylene groups; Polyalkoxylated fatty alcohols or polyalkoxylated alkylaryl alcohols with mixed oxyalkylele groups

Definitions

  • Paste-like concentrate suitable to form stable (non separating) alkaline cleaning and detergent solutions
  • the present invention refers to a paste-like thixotropic detergent or cleaning concentrate which is able to form a stable (non separating) alkaline parent lye for use as cleansing agent or detergent, preferably for the machine cleaning of textiles, a parent lye containing said concentrate and to a method for washing textiles using said concentrate in diluted form as a parent lye.
  • the single washing machines are centrally supplied with the solution of a detergent or cleaning agent, the so called parent lye, to maximize the capacity of the laundry and the machinery and to optimise the course of the process.
  • the central supply proceeds using a parent lye which contains 5 to 15 wt.-% of the cleaning agent or detergent and which is distributed from a reservoir to the single washing machines, in most cases without further diluting.
  • a cleaning agent or detergent suitable for use in industrial laundries must be capable to form a stable (non separating) alkaline cleaning or detergent solution to ensure a constantly excellent cleaning or washing performance.
  • the object of the present invention is to provide a cleaning or detergent concentrate which on one hand forms a stable paste as such and on the other hand also forms a stable (non separating) alkaline cleaning or detergent solution when dissolved in water. Additionally, it should be possible to purify waste water resulting from the cleaning or washing process and containing said concentrate on common membrane filtration units, especially ones using one or more reverse osmosis steps, without blocking the membrane or causing other damages.
  • a paste-like, thixotropic, alkaline detergent or cleaning concentrate comprising a) at least one first component selected from one or more compounds represented by the general formula (I), R -(OC 2 H 4 ) n -(OC 3 H 6 ) m -OH (I) wherein R 1 represents an unbranched or branched alkyl or alkenyl group having 4 to 8, preferably 5 to 7, carbon atoms, and wherein the sum of the average degree of ethoxylation n and propoxylation m ranges from 1 to 9, preferably from 3 to 7, with one of n and m optionally being 0, and b) at least one second component selected from one or more compounds represented by the general formula (II),
  • thixotropic means that the concentrate exhibits such a structural viscosity that it does not flow under the influence of gravity.
  • the dosing of thixotropic composition is then preferably performed by shearing the concentrate to reduce viscosity at first and afterwards dosing and transmitting the free-flow concentrate using for example a feed pump.
  • the above mentioned viscosity values refer to read- ing after a detection time of 3 minutes to take the time dependency of the thixotropic effect into account.
  • the decrease of viscosity on shear is to a great extent reversible, i. e. after having stopped the shear the concentrate will return to its original physical condition without separation.
  • the viscosity may change while an equilibrium adjusts within the concentrate after its preparation. Accordingly, viscosity values measured during the manufacturing process or directly afterwards may falsify the result. Thus, the viscosities are determined after the equilibrium is adjusted and the final viscosity is reached. Storing for one month is generally sufficient to obtain reliable values.
  • a mixture of two or more compounds represented by general formula II is used wherein R 2 is C10, C13 and/or C12-14, o is 3, 4 and/or 5 and p is 0 or 5. In these cases it is especially preferred to use at least one compound represented by the general formula I wherein R 1 is C6, n is 5 and m is 0.
  • the preferred amount of the com ⁇ ound(s) represented by the general formula (I) is in the range of from 0,5 to 15 wt.-%, preferably 1 to 10 wt.-% and most preferred from 2 to 5 wt.-% based on the whole concentrate.
  • the one or more compounds represented by the general formula (II) should be present in an amount of from 5 to 90 wt.-%, preferably from 15 to 70 wt.-% and most pre- ferred from 20 to 50 wt.-% based on the whole concentrate.
  • the alkalinity may be achieved using any compound known in the state of the art which when dissolved in water shows an alkaline reaction, like for example alkali hydroxides, especially sodium or potassium hydroxide, ammoniumhydroxide, alkaline-earth hydrox- ides, alkali carbonates, like soda or mixtures thereof.
  • alkali hydroxides especially sodium or potassium hydroxide, ammoniumhydroxide, alkaline-earth hydrox- ides, alkali carbonates, like soda or mixtures thereof.
  • the preferred alkalinity generating compound is represented by soda.
  • amorphous alkali silicate may be added as alkalinity source.
  • Sodium meta silicate with a ratio of Na 2 O : Si0 2 in the range of 1 : 0,8 to 1 : 1 ,3, preferably 1 : 1 is especially appropriate.
  • one or more phosphates can be used instead of or in addition to the amorphous alkali silicate.
  • the phosphates are preferably selected from at least one of primary ortho- phosphates represented by the general formula M'H 2 P0 4 or M"(H 2 P0 4 ) 2 , secondary ortho- phosphates represented by the general formula M' 2 HP0 4 or M ⁇ HPO 4 or tertiary orthophos- phates represented by the general formula M' 3 PO or M" 3 (P0 ) 2 , as well as condensed phosphates derived therefrom, the so called meta phosphates and poly phosphates, with M being a metal cation , M 1 preferably being an alkali metal and M" preferably being an alkaline-earth metal.
  • the phosphate is a tripolyphosphate, preferably sodium tripolyphosphate (NasP ⁇ Oio).
  • the content of the alkalinity source is chosen such that the pH value of a use solution containing the inventive concentrate should advantageously be in the range of from 9 to 13, preferably 10 to1 .
  • the total amount of the alkalinity source pref- erably ranges from 25 to 70 wt.-%, more preferably from 30 to 60 wt.-% and most preferred from 50 to 58 wt.-%, based on the whole concentrate.
  • soda is used in amounts of from 15 to 60 wt.-%, preferably 25 to 55 wt.-%.
  • the amount of amorphous alkali silicate, especially sodium meta silicate, with the above mentioned Na 2 0 : Si0 2 ratio preferably ranges from 10 to 20 wt.-%, and especially is 15 wt.-%.
  • the phosphor compound should be contained in an amount of at most 40 wt.-%, preferably in an amount of 30 wt.-% or below, especially in a range of from 20 to 30 wt.-% based on the whole concentrate.
  • the inventive concentrate may additionally comprise at least 1 wt.-% based on the whole concentrate of at least one alkanolamine.
  • the sum of alkanolamines contained in the concentrate is contained in an amount above 2 wt.-% and lies within the range of from 2 to 10 wt.-%, and in particular from 3 to 5 wt.-%, based on the whole concentrate.
  • At least one of the alkanolamines is represented by the general formula (III),
  • R 3 represents a hydroxyalkyl group having 1 to 6 carbon atoms, and wherein R 4 and R 5 independent from each other are identical with R 3 or represent hydrogen.
  • the most suitable alkanolamines are represented by mono-, di- or triethanolamine or mixtures thereof.
  • alkanolamines may function as solutizer and thus improve the homogeneity of the inventive concentrate when diluted to form the use solution, for example the parent lye.
  • alkanolamines additionally represent an alkalinity source. As they are liquid they help to avoid the use of water to provide the paste-like concentrate.
  • the paste-like concentrate comprises a solid phase which is dispersed in a liquid phase as homogeneous as possible.
  • the composition according to the present invention forming the above concentrate enables the water content to be reduced to an amount preferably of less than 3 wt.-%, more preferred less than 2 wt.-%, and most preferred less than 1 wt-% based on the whole concentrate.
  • Said water content is meant to refer to free water only. Additional water may be present in form of water of crystallisation or water of constitution.
  • the concentrate may additionally comprise dehydration agents, for example in form of salts which bind water of crystallisation like anhydrous sodium acetate, calcium sulfate, calcium chloride, sodium hydroxide, magnesium silicate or metal oxides like CaO, MgO, P 4 O ⁇ 0 or Al 2 0 3 or mixtures thereof.
  • dehydration agents for example in form of salts which bind water of crystallisation like anhydrous sodium acetate, calcium sulfate, calcium chloride, sodium hydroxide, magnesium silicate or metal oxides like CaO, MgO, P 4 O ⁇ 0 or Al 2 0 3 or mixtures thereof.
  • the concentrate may additionally contain at least one alkyl polyglucoside having from 8 to 14 carbon atoms in the alkyl group and from 1 to 5 glucose moieties.
  • the amount of the alkyl polyglucosid should be in the range of from 1 to 6 wt.%, preferably from 1,5 to 3 wt.%.
  • Such compounds have a strongly hydrophobic alkyl moiety and a strongly hy- drophilic glucosid moiety and, accordingly, are very much appropriate to function as stabilizer of the paste-like concentrate.
  • the concentrate may comprise one or more further additives generally used in cleaning agents or detergents like further soil release agents, cobuilders, optical brighteners, dyes and fragrances, small quantities of neutral salts such as sulfates and chlorides in the form of their sodium or potassium salts, provided that these do not impair the positive properties.
  • suitable additives to the product may be enzymes, foam regulators, redeposition inhibitors, soil release agents, bleaching agents from the class of per com- pounds, which are conventionally used together with activators, active chlorine compounds as well as dyes, dye transfer inhibitors or dye intensifiers and fragrances.
  • liquid components should be pre-mixed before the solid components and further ingredients are incorporated.
  • particulate solids are not fine enough to provide a homogeneous, paste-like concentrate, they may be grinded one or more times before incorporation.
  • the inventive concentrate as described above can be used to prepare a stable parent lye.
  • the parent lye contains the inventive concentrate in amounts of from 0,5 to 25 wt.-%, preferably 5 to 15 wt.-% based on the detergent solution.
  • the concentrate is dissolved in pure water to form the parent lye.
  • further additives like hydrophilic auxiliaries, are dissolved.
  • the main emphasis for the usage of the concentrate or the solution containing the inventive concentrate, respectively, is on laundry detergents, it may as well be applied as cleaning agent in warewashing, clean in place cleaners and sanitizers, food an dairy formulations and other applications in which such alkaline cleaning solutions may be applied.
  • the solution containing the concentrate is used as parent lye for the industrial machine cleaning of textiles.
  • the present invention provides a method for washing textiles comprising one step in which a parent lye is prepared by diluting the concentrate according to claims 1 to 12 such that the parent lye contains the concentrate in an amount of from 0,5 to 25 wt.-%, preferably of from 5 to 15 wt.-% based on the detergent solution.
  • the concentrate according to the invention is metered from a storage reservoir using a metering equipment which is suitable to meter paste-like substances by influence of shearing force.
  • An appropriate equipment is described for example in WO 95/09263.
  • the required amount of the concentrate which then is free-flow is transmitted into a further tank in which it is combined and dissolved with the appropriate amount of solvent, which generally is water and may as well contain further additives or auxiliaries.
  • the mixture is advantageously agitated.
  • the resulting parent lye may than either directly be distributed to the single washing machines or stored for usage in washing cycles to be performed later.
  • the parent lye is shortly agitated after having been stored before it is distributed to the single washing machines to guarantee a homogeneous distribution of the active agent in the parent lye.
  • the parent lye may be further diluted depending on the desired detergent concentration.
  • the paste-like concentrate for example to wrap it in foil bags. Since the concentrate essentially does not contain water the concentrate may be wrapped in foils which are water soluble. In this case when preparing the parent lye the required number of foil bags is poured into a tank, the appropriate amount of water is added and after the foils are dissolved by the water the parent lye may be obtained by stirring.
  • a further advantage resulting from the composition of the concentrate is that it allows the purification of the waste water which is accumulated during the cleaning or wash- ing process using common membrane filtration units without blocking them or causing other damages.
  • the membrane filtration may as well comprise at least one ultra filtration and/or reverse osmosis step. Said purification processes succeed best with a concentrate according to the invention which contains one or more phosphates.
  • the cited values refer to wt.-%, based on the whole concentrate.
  • the paste-like concentrates exhibited good storage stabilities, i. e. they did not separate over a period of at least 12 months, provided stable parent lyes when being stirred and optionally warmed up to 30-40°C, i. e. they essentially did not separate over a period of at least 1 week, when diluted in water in an amount such that the content of the concentrate was 10 wt.-% based on the parent lye. Generally, slightly stirring was sufficient to obtain a stable parent lye. Moreover, the concentrate when used as a 10 wt.-% aqueous parent lye exhibited excellent cleaning properties.

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Detergent Compositions (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

L'invention porte sur un concentré détergent ou de nettoyage, thixotropique et alcalin, en pâte comportant: au moins un premier composant choisi parmi un ou plusieurs composés de formule générale (I): R1-(OC2H4)n-(OC3H6)m-OH dans laquelle R1 représente un groupe alkyle ou alcényle ramifié ou non à 4 à 8 et de préférence 3 à 7 atomes de carbone; et dans laquelle la somme du taux moyen d'éthoxylation (n) et de propoxylation (m) est comprise entre 1 et 9, et de préférence entre 3 et 7, l'un des (n) ou (m) étant facultativement nul; et b) au moins un deuxième composant choisi parmi un ou plusieurs composés de formule générale (II): R2-(OC2H4)0-(OC3H6)p-OH dans laquelle R2 représente un groupe alkyle ou alcényle ramifié ou non à 1 à 9, et de préférence 3 à 7 atomes de carbone; et dans laquelle la somme du taux moyen d'éthoxylation (o) et de propoxylation (p) est comprise entre 1 et 9, et de préférence entre 3 et 7, l'un des (o) ou (p) étant facultativement nul. Par ailleurs, le concentré de lavage présente à 25 °C une viscosité comprise entre 80 000 mPas et 250 000 mPas à 50 t/m, mesurée dans un viscosimètre rotatif de Brookfield (broche no. 7) dans des conditions sinon identiques. L'invention porte également sur une lessive parente stable contenant ledit concentré, et sur un procédé de lavage de textiles selon lequel la lessive parente est obtenue par dilution dudit concentré, et l'eau de lavage accumulée pendant le processus de lavage peut au moins en partie être purifiée dans une unité de filtrage à membrane.
PCT/EP2004/050963 2004-05-28 2004-05-28 Concentre en pate pouvant former des solutions detergentes et de lavage, alcalines et stables (pas de separation) WO2005118767A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
PCT/EP2004/050963 WO2005118767A1 (fr) 2004-05-28 2004-05-28 Concentre en pate pouvant former des solutions detergentes et de lavage, alcalines et stables (pas de separation)
AT04741679T ATE423188T1 (de) 2004-05-28 2004-05-28 Geeignetes pastenförmiges konzentrat zur herstellung von stabilen, sich nicht entmischenden alkalischen reinigungs- und waschmittellösungen
EP04741679A EP1751265B1 (fr) 2004-05-28 2004-05-28 Concentre en pate pouvant former des solutions detergentes et de lavage, alcalines et stables (pas de separation)
DE602004019580T DE602004019580D1 (de) 2004-05-28 2004-05-28 Geeignetes pastenförmiges konzentrat zur herstellung von stabilen, sich nicht entmischenden alkalischen reinigungs- und waschmittellösungen
DK04741679T DK1751265T3 (da) 2004-05-28 2004-05-28 Pastalignende koncentrat, der er egnet til fremstilling af stabile (ikke separerende) alkaliske rengörings- og detergentoplösninger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2004/050963 WO2005118767A1 (fr) 2004-05-28 2004-05-28 Concentre en pate pouvant former des solutions detergentes et de lavage, alcalines et stables (pas de separation)

Publications (1)

Publication Number Publication Date
WO2005118767A1 true WO2005118767A1 (fr) 2005-12-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2004/050963 WO2005118767A1 (fr) 2004-05-28 2004-05-28 Concentre en pate pouvant former des solutions detergentes et de lavage, alcalines et stables (pas de separation)

Country Status (5)

Country Link
EP (1) EP1751265B1 (fr)
AT (1) ATE423188T1 (fr)
DE (1) DE602004019580D1 (fr)
DK (1) DK1751265T3 (fr)
WO (1) WO2005118767A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8287658B2 (en) 2009-06-02 2012-10-16 Ecolab Usa Inc. Biodegradable surfactant blend

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995029282A1 (fr) * 1994-04-27 1995-11-02 Henkel-Ecolab Gmbh & Co. Ohg Procede et dispositif pour vider un recipient rempli d'une pate tixotrope
US6187739B1 (en) * 1995-09-21 2001-02-13 Henkel Kommanditgesellschaft Auf Aktien Paste-form washing and cleaning agents
US6329333B1 (en) * 1997-01-30 2001-12-11 Henkel-Ecolab Gmbh & Co. Ohg Pastelike detergent and cleaning agent

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995029282A1 (fr) * 1994-04-27 1995-11-02 Henkel-Ecolab Gmbh & Co. Ohg Procede et dispositif pour vider un recipient rempli d'une pate tixotrope
US6187739B1 (en) * 1995-09-21 2001-02-13 Henkel Kommanditgesellschaft Auf Aktien Paste-form washing and cleaning agents
US6329333B1 (en) * 1997-01-30 2001-12-11 Henkel-Ecolab Gmbh & Co. Ohg Pastelike detergent and cleaning agent

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8287658B2 (en) 2009-06-02 2012-10-16 Ecolab Usa Inc. Biodegradable surfactant blend

Also Published As

Publication number Publication date
DK1751265T3 (da) 2009-05-04
EP1751265A1 (fr) 2007-02-14
DE602004019580D1 (de) 2009-04-02
EP1751265B1 (fr) 2009-02-18
ATE423188T1 (de) 2009-03-15

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